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ES1x diode - fast, superfast, ..., superfast efficient!
New superfast and at the same time efficient diodes Diotec ES1x series enable to further decrease power losses even in very quick circuits.
When using diodes in power circuits working at high frequencies – like
switch-mode power supplies, except forward losses also switching losses appear.
Switching losses are directly commensurable to the working frequency and for the
usual diodes (1N400x) these losses are unacceptably high already from
frequencies of few kHz. As it is known, switching losses are caused by the fact,
that to bring a diode to a reverse (unconducting) status, it is necessary to
remove a charge stored in the PN junction. At the same time, to the switching
losses also an energy stored in a parasitic inductance of a diode and diode
leads contributes. Amount of switching losses is mainly affected by a parameter
trr – reverse recovery time, that´s why for usage at higher frequencies, the
types with the shortest possible trr are suitable.
Advantages / Features:
- superfast efficient diodes
- very low overall losses
- extremely short recovery time 15-35 ns according to version
- very low forward voltage - VF
- SMA smt package (DO-214AC)
- 50-600V reverse voltage
As overall losses are the sum of forward and switching losses, at selecting of a
suitable type it is always necessary to consider both parameters – VF and trr.
For example if we had a circuit working on a frequency of only few kHz, but with
higher currents of few Ampers and more, it is suitable to use a diode with a low
forward voltage and it should be from at least a “fast” category. But if we have
for example a circuit working at few 100 kHz frequency, we should use a diode
with as short trr as possible. Naturally, it is ideal if a diode features a low
VF and a short trr at the same time.
Both these demands are met in new
ES1x series
diodes Diotec, marked as „superfast efficient“. They feature a low VF and an
extremely short recovery time, below 15ns. By their features they surpass
present types from a superfast and ultrafast category. Diodes ES1x are
manufactured by more global producers (similarly like for example 1N400x) and
they are available with a 50-600V reverse voltage (ES1A...ES1J). ES1x from
company Diotec belong to the top products in this diode series, for example ES1D
feature VF=0,92V/1A and trr max 15 ns.
20111228039.1.2012КомпонентыSOS electronic s.r.o.